16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 2 Pack discounted It is designed for Hydro-X

It is designed for Hydro-X Pro system only

agricultural crops

025 microns) and bacteria (gram-positive and gram-negative)

your seeds will be protected from being scorched

For best results

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 2 Pack discounted It is designed for Hydro-XImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7 8 and 5 1 4 inch depth filters,